Oxidative Stress Marker
nounPronunciation: /ˌɒksɪˈdeɪtɪv ˈstres ˈmɑːrkər/
A measurable compound or indicator that reflects the accumulation of reactive oxygen species (ROS) and cellular damage in plant tissues exposed to abiotic stress. Common markers include malondialdehyde (MDA), hydrogen peroxide (H2O2), and protein carbonyl content.
Plain English
A detectable substance in plants that shows how much cellular damage has occurred from harmful oxygen molecules during stress.
Etymology & History
Usage
"MDA content served as an oxidative stress marker to quantify drought-induced cellular damage in the wheat cultivars."
Style guide notes: Capitalize 'Oxidative Stress Marker' only when used as a formal section heading; commonly abbreviated as OSM in repeated references.
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Frequently Asked Questions
What is the most commonly measured oxidative stress marker in plants?
Malondialdehyde (MDA) is the most widely used marker because it indicates lipid peroxidation damage.
How do oxidative stress markers help identify stress tolerance?
Lower marker levels in stressed plants indicate better antioxidant systems and superior stress tolerance abilities.
Why Test Candidates on This?
Oxidative stress markers are frequently assessed in abiotic stress research to quantify cellular damage and evaluate plant cultivar performance.
Required skill level: Mid